The direct evidence is small: write the methanol fuel-cell equation and compare the climate-emission advantage of hydrogen-oxygen cells over methanol cells.
A hydrogen-oxygen fuel cell is used to provide electrical energy for an electric motor in a car.
Hydrogen-oxygen fuel cells have advantages over methanol-oxygen fuel cells in vehicles.
Which of these is an advantage of the hydrogen-oxygen fuel cell?
more energy is released per mole of fuel used
emissions do not contribute to climate change
hydrogen is easier to store than methanol
only hydrogen can be obtained from renewable resources
B